SACE EMAX 2 NEW LOW VOLTAGE POWER C I RCUI T BRE AKERS TO ANS I C37 / UL 1066 / CSA STANDARDS
6/8
— Accessories for circuit breakers
Control Opening and closing release- YO/YC (Fig. 06) The opening and closing releases enable the circuit-breaker to be controlled remotely. Opening is always possible, while closing is available only when the closing springs of the operating mechanism are loaded and the circuit-breakers is ready to close. The releases operate by means of minimum impulse cur- rent duration time of 100 ms. They can also operate in permanent service. If opening command is given by means of the opening release, the circuit-breaker can be closed by de-energizing the opening release and, after a time of at least 30 ms, by controlling the closing. The circuit breaker operating mechanism has an anti-pumping function that helps ensure safety and reli- ability.
— Electrical diagram reference: figures 75, 77
— Fig. 06
Second opening and closing release - YO2/YC2 For certain installations the redundancy of mechanisms and circuit-breaker operating circuits is often re- quested. To address these needs, the SACE Emax 2 circuit-breakers can be equipped with double opening release and double closing release. The technical characteristics of the second opening release remain the same as those of the first opening and closing release. A double closing release can be used for E2.2, E4.2 and E6.2 circuit-breakers; a second open release in an alternative to undervoltage release.
— Electrical diagram reference: figures 72, 79
General characteristics Power supply (Un)
AC
DC
24V 30V 48V 60V
110V…120V 120V…127V 220V…240V 240V…250V 380V…400V 415V…440V 480V…500V
- - -
YO/YO2: 70%...110% Un YC/YC2: 85%...110% Un
Operating limits (IEC60947-2 standards)
Inrush power (Ps)
300VA 3.5VA
300W 3.5W
Continuous power (Pc) Opening time (YO/YO2) E1.2
35 ms 35 ms
E2.2 … E6.2
Closing time (YC/YC2) E1.2
50 ms 70 ms
E2.2 … E6.2
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